Micro surgical instrument and loading unit for use therewith
First Claim
1. A loading unit configured for engagement with a surgical instrument, the loading unit comprising:
- a proximal body portion defining a longitudinal axis; and
a tool assembly disposed in mechanical cooperation with the proximal body portion, the tool assembly including a clamping member, a cartridge assembly, and an anvil assembly, wherein the clamping member includes a top portion for engaging the anvil assembly and a bottom portion for engaging the cartridge assembly, and wherein a lower-most surface of the bottom portion is closer to the top portion of the clamping member than an upper-most surface of an actuation sled, at least one of the cartridge assembly and the anvil assembly being movable with respect to the other between an open position and an approximated position to engage tissue therebetween, the cartridge assembly being configured to house a plurality of fasteners therein, and wherein the diameter of the tool assembly is less than or equal to about 8 mm.
1 Assignment
0 Petitions
Accused Products
Abstract
A loading unit configured for engagement with a surgical instrument is disclosed. The loading unit comprises a proximal body portion and a tool assembly. The proximal body portion defines a longitudinal axis. The tool assembly is disposed in mechanical cooperation with the proximal body portion and includes a cartridge assembly and an anvil assembly. At least one of the cartridge assembly and the anvil assembly is movable with respect to the other between an open position and an approximated position to engage tissue therebetween. The cartridge assembly is configured to house a plurality of fasteners therein. The diameter of the tool assembly is less than or equal to about 8 mm.
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Citations
28 Claims
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1. A loading unit configured for engagement with a surgical instrument, the loading unit comprising:
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a proximal body portion defining a longitudinal axis; and a tool assembly disposed in mechanical cooperation with the proximal body portion, the tool assembly including a clamping member, a cartridge assembly, and an anvil assembly, wherein the clamping member includes a top portion for engaging the anvil assembly and a bottom portion for engaging the cartridge assembly, and wherein a lower-most surface of the bottom portion is closer to the top portion of the clamping member than an upper-most surface of an actuation sled, at least one of the cartridge assembly and the anvil assembly being movable with respect to the other between an open position and an approximated position to engage tissue therebetween, the cartridge assembly being configured to house a plurality of fasteners therein, and wherein the diameter of the tool assembly is less than or equal to about 8 mm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A cartridge assembly for use with a tool assembly of a surgical instrument, the cartridge assembly comprising:
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a plurality of fasteners disposed at least partially therein; an actuation sled configured for longitudinal translation therein along a first longitudinal axis; wherein each fastener of the plurality of fasteners is configured to be ejected at a non-perpendicular angle with respect to the first longitudinal axis, each fastener of the plurality of fasteners moving away from the actuation sled at an acute angle; and a clamping member having opposed first and second portions, the first portion coupled to the cartridge assembly, the first portion spaced from the second portion defining a first distance and an upper surface of the actuation sled spaced from the second portion defining a second distance greater than the first distance. - View Dependent Claims (14, 15)
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16. A surgical instrument, comprising:
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a handle assembly; an elongated body portion extending distally from the handle assembly; and a loading unit configured for engagement with a distal end of the elongated body portion, the loading unit comprising; a proximal body portion defining a longitudinal axis; and a tool assembly disposed in mechanical cooperation with the proximal body portion, the tool assembly including a clamping member, a cartridge assembly, and an anvil assembly, wherein the clamping member includes a top portion for engaging the anvil assembly and a bottom portion for engaging the cartridge assembly, and wherein a lower-most surface of the bottom portion is closer to the top portion of the clamping member than an upper-most surface of an actuation sled, at least one of the cartridge assembly and the anvil assembly being movable with respect to the other between an open position and an approximated position to engage tissue therebetween, the cartridge assembly being configured to house a plurality of fasteners therein, and wherein the diameter of the tool assembly is less than or equal to about 8 mm. - View Dependent Claims (17, 18, 19, 20)
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21. A surgical instrument comprising:
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a cartridge assembly and an anvil assembly, at least one of the cartridge assembly and the anvil assembly being movable with respect to the other between an open position and an approximated position to engage tissue therebetween, the cartridge assembly being configured to house a plurality of fasteners therein; an actuation sled having the shape of a wedge; a clamping member having opposed first and second portions, the first portion coupled to the cartridge assembly and the second portion coupled to the anvil assembly, the first portion spaced from second portion defining a first distance and an upper surface of the actuation sled spaced from the second portion defining a second distance greater than the first distance; a plurality of pushers arranged in the cartridge assembly so as to be engaged by the actuation sled; a clamping member translatable through the cartridge assembly and anvil assembly; and a sled bar translatable through the cartridge assembly and arranged to move the actuation sled distally through the cartridge assembly so that the actuation sled engages the plurality of pushers, such that a first pusher of the plurality of pushers moves at an acute angle with respect to a second pusher of the plurality of pushers. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28)
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Specification